JPEG XL

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Im curious as to why you think a 2.4

damian101
 Quackdoc Im curious as to why you think a 2.4 curve is better then a 2.2 curve
2023-12-04 02:43:39
2023-12-04 02:43:40
Better perceptual uniformity.
2023-12-04 02:44:05
More bits for dark areas without special weighting in case of lossy coding.
Quackdoc
2023-12-04 02:50:32
I've never honestly found this to be the case that this is actually better. while yes, you do get more potential steps in darkness. I've always found that unless you are working with particularly darker images, working with a 2.2 curve gives you more steps on the places where people actually tend to care
Silikone
2023-12-04 02:56:21
Also because it's an industry standard, but as pointed out, BT.709 creates ambiguity. I'm curious about 2.2 ambiguity, though. Can you reliably tag it separately from sRGB?
Quackdoc
2023-12-04 03:13:00
I honestly don't think it being an "industry standard" when most displays are designed to display an sRGB/2.2 image natively oob is a big deal. not to mention that when it comes to distributing, you should almost never rely on the consumer's pipeline to be able to properly display a 2.4 image on a 2.2/sRGB display.
Traneptora
 Silikone Also because it's an industry standard, but as pointed out, BT.709 creates ambiguity. I'm curious about 2.2 ambiguity, though. Can you reliably tag it separately from sRGB?
2023-12-04 03:38:10
yes easily because they have separate tags in various files and separate H.273 entries
2023-12-04 03:39:21
The primary reason sRGB has a linear section is to keep the function Lipschitz continuous in a neighborhood of 0
2023-12-04 03:39:40
having unbounded derivative has some issues
Silikone
 Traneptora yes easily because they have separate tags in various files and separate H.273 entries
2023-12-04 03:41:53
BT.470 System M?
Traneptora
 Silikone BT.470 System M?
2023-12-04 03:48:27
I don't know, I would have to check the document
2023-12-04 03:48:51
sRGB is 13? I think?
2023-12-04 03:49:00
IEC61966-2-1
Silikone
2023-12-04 03:49:29
Traneptora
2023-12-04 03:49:43
yes, that
Silikone
2023-12-04 03:50:09
TIL something. I never gave those (historical) tags any second thought
Traneptora
2023-12-04 03:50:35
historical points to OG definition
damian101
 Silikone Also because it's an industry standard, but as pointed out, BT.709 creates ambiguity. I'm curious about 2.2 ambiguity, though. Can you reliably tag it separately from sRGB?
2023-12-04 05:58:41
Yes, that's the main reason why I like 2.2, I can tag it within CICP, as 4, BT.470 System M. Which is not the case with Gamma 2.4 Bt.1886, industry standard or not.